The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2009
Filed:
Dec. 18, 2003
Igor Friedland, Shoham, IL;
Igor Friedland, Shoham, IL;
Abstract
Device () for producing torque, the device including an armature () made of a printed circuit board, at least one winding () formed on the armature in a substantially rectangular spiral path, at least one magnetic field inducer () and a counteractive-torque producing element () coupled with the armature, the armature being rotatable about a rotation axis, each of the magnetic field inducers being located in the vicinity of a respective corner of the substantially rectangular spiral path, each of the magnetic field inducers producing a magnetic field along a magnetic axis in a selected direction, the selected direction being opposite to another selected direction respective of an adjacent magnetic field inducer, each of the magnetic axes being substantially normal to the substantially rectangular spiral path, the windings and the magnetic field inducers applying the torque on the armature, when electric power is applied to the windings, the torque being at a torque level respective of a selected power level, the counteractive-torque producing element applying a counteractive torque on the armature in a direction opposite to that of the torque.